Pipe-bending machine.



F. MORRIS.

PLPE BENDlNG MACHINE. Y APPLLCATIONULED Dame. 191e.

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` FBLNCS MORRIS, OF FHILBELPEIA, PENNSYLVANIA.,

PIPE-BENDING MACHINE,

Specification of Letters Patent.

Patented May v, isis.

Application filed December .6, 1916. Serial No. 135,304.

To all 'whom ama concern:

Be itknown t at I, FnANcis .Morand a citizen of the' United States,residing at .Philadelphia in the county of Philadelphia certain new andPipe-Bending Machines and State of Pennsylvania, have invented usefulImprovements in of which the following is a specification.l

The object of this invention is to provide a device for the purpose offacilitating the rapid and perfect bending of lpipe or tubing of varioussizes.

Another object is to provide a device of this character which comprisesthe fewest possible number of parte, and is of the simplest operation.

Still another object is to provide a device which will bend a pipe'ortube accurately to a form, such as a peripherally grooved wheel, andwithout necessitating a great amount of Waste material at the beginningy of the arc.

`And a further object is to provide such a device as will create thebending of a pipe without creasing or cracking any portion of the sidesthereof, and which insures the perfect and uniform expansion of theouter circumference and the contraction of the inner circumference ofthe arc, without mutilation toeven a slight degree.

These and other objects of the invention are fully described in thefollowing specification, When read in conjunction with the accompanyingdrawings in which Figure l is a top plan view of the machine in itspreferred form and showing the two main operating parts of the device intheir eX- treme relative positions; Fig, 2 is a vertical longitudinalsection of the device shown in Fig. 1 with the plate and bar inalinement; Fig. 3 is a detail view of an adapting member for pipes ofless size than" that which the bending form is designed for; and Fig; 4'is a section on the line 4 4 of Fig. 2.

Referring to the drawings specifically, a plate l has adjustably securedthereto an angle iron 2, which is slotted at 3, while adjustably securedto said angle iron with thumb nuts d is a stop 5, in turn angularly bentet one end 6' and provided with a concave surface 7 :for a purposehereinafter scribed.. i

Rcinovably secured to 'the end portion of the pileta i by means ci abolt 9 is -a wheel 'the plate 1, said head being of conform to the sizeof or forml 10, provided with :5t/peripheral groove 11 of the sameradius as that of the outside diameter of the pipe il to be bent. Saidbolt comprises a shank 12, threaded and provided with a nut 13 upon oneend,

while an enlarged head 1d at the other endv prevents it from passingupwardly through slightly greater vextent than the thickness acting as apivotal mounting for, a bar 15 surrounding the same, said head beingalso provided'with a threaded central aperture for the reception of` arelatively small bolt 16, for securing the'said bar rotatably upon thebolt 9.

The wheel l0 is provided with a hole 1?, through which passes a dowelpin 18 into an oppositelypositioned hole in the plate 1, said pinpreventing the revolving of the said wheel as a section of pipe is beingbent. Furthermore, said wheel is angularly recessed at 19 as shown inthe drawings, and into this recess extends an inwardly bent ilange20upon one end of a concave-convex section of .metal 21, formedlongitudinally to the same curve as the groove in the wheel 10, theplacing of'this member within the said wheel operating to alter thelatter, to provide for the adaptation of the machine to the bending of adifferent size of pipe.

Mounted upon the bar 15 is a pair of parallel plates 24 between which issecured a wheel 25, peripherally grooved at 26 to the pipe to be bent,said plates being revoluble about an arc upon said bar and around a bolt27 as an axis, and positively held against movement.

in one direction by a pair of stops 28 secured to said bar. The free endportion 29 of the latter is cylindrical and threaded to receive such anarticle as a length of one-inch pipe 30, used for the purpose of a leverin oscillating the bar 15 about the endv of the plate 1.

To 'bend a piece of pipe, the threaded end of the same is placed againstthe angular eX- tension of the stop 5 and resting in the groove ot thewheel 10, while the wheel 25 also partially encircles the pipe and is astar around of, and

in one direction as the bar l5 can be turned, or i io tuting varioussized` pairs oi Wheel'svfor those "added size made possible ably fixedtoy Which -point the osCillafable upon reaching' lWheel, will havelbentthe pipel through anV are of exactly 90 degrees, and-with as, smal atangent upon .the starting end as may bef desired,the threads of Asaidtangent ,also b eing Well protected against mutilation by the surface 7of the gageor grippingineinber'.

Il? the stop 81 is removed, the pipe' may be bent more-thang() degrees',andby substi shown; provision isma e. for bending several dierent sizesvof pipes, 1n

bei".l 21 *with y this set. Thesemand otherk Achanges ina be madev inthearran'genientjoi the partsof the invention, ingl .from the spiritthereof, or froin the scope of the appended claim'. Additionally' thegage is graduated; the angle ,-iron'' has its bolts adjustable in Slots32,; and a removablefplug 33 solidifies the end o the pipe to preventcrushing. 4

1Having` thus described my inventiomwhat.

l et @stent maybe obtained 'for ve ce by,l said' yoke and adaptedtouroifsaid v'ibrin upon l said first member, *an fadjista'ble' angleladdition to the 'v by using the mein-.

Without depart-Y nally thereor` to) lits cauti,-` by addressing 'the"A-'tube bending machine, conuprisii'lg a base plate,proyidedwith'paral'lel slots each having parallelangulerly directed '0Hfr'm Se. f osleillate-V upon said :plate with said orma's an axis,v ayoke piyo tallyy mountedf'upon said member, a' Wheelfcarried-I to',:tollowthe con: l,the oscilla'tionffo'f provided. with means ad sidesof thesaid oii'sets of saidslots Within' said plate to retain saidbar.in-dierentpar'-4 allelA positions with respeetftheifeto, Aand a stopapted 5to enga-gethe' setsa.; cured-thereto, a `inernber mounted to ythe center o earried'by said bar and adyustable longitudifvarious.diameters While being bent byy .said niachine,inclose proximity to thesaid Wheel 1n 'every position oisaidangle' bar.

"1n testimony,Whereoi .I haye aixed "my signature.

'FRANCI'S'MOBWS-

